Macroscopic resonant tunneling in an rf-SQUID flux qubit under a single-cycle sinusoidal driving<sup><xref rid="cpb_26_4_047402fn1" ref-type="fn">*</xref></sup> <fn id="cpb_26_4_047402fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11474154, 61371036, 61571219, 11227904, and 61501222) and the Natural Science Fund for Distinguished Young Scholars of Jiangsu Province, China (Grant No. BK2012013) and PAPD.</p> </fn>

Macroscopic resonant tunneling in an rf-SQUID flux qubit under a single-cycle sinusoidal driving^* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11474154, 61371036, 61571219, 11227904, and 61501222) and the Natural Science Fund for Distinguished Young Scholars of Jiangsu Province, China (Grant No. BK2012013) and PAPD.

Shi Jianxin^{1, 2}, Xu Weiwei^{1, †}, Sun Guozhu^{1, ‡}, Chen Jian¹, Kang Lin¹, Wu Peiheng¹

(color online) Numerical calculations of with different initial phase . The inset shows its dependence on the amplitude when the frequency is 10 kHz. (a)Φ = 0; (b)Φ = π/4; (c)Φ = π/2; (d)Φ = 3π/4; (e)Φ = π; (f)Φ = 5π/ 4; (g)Φ = 3π/2; (h)Φ = 7π/4; (i)Φ = 2π.